They use the two standard physical filters: zinc oxide and titanium dioxide. Most listings feature zinc oxide formulations, and at least one listing includes titanium dioxide as an active ingredient.
Reviewer feedback is generally positive: many users report little to no white cast and describe finishes as invisible, matte-to-natural, or dewy after blending. A minority note a slight initial white cast or shimmer that can usually be blended out.
Common added skincare ingredients listed include ceramides, hyaluronic acid, niacinamide, and antioxidants/vitamins (vitamin C and vitamin E). Some formulas also include iron oxides for tinting, and a few list aloe or a shea butter complex.